Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2013.2547.2553ZhangGuozhi 1220131213The computing method in a joint fastener with bolts was studied. The cooling method, pretension element method and tightening method used in the simulation were analyzed for their computing principle and application situation. The device with thread was analyzed with above three methods and their results were compared so as to give the simplifying criteria of joint surfaces. Furthermore, a joint of pipe and joint mechanical structure were analyzed with the pretension element method and their analysis results were obtained when the bolts were pretended and other loads were applied.]]>Yan, B.,1995Xue, Z., M.T.A. Saif and H. Yonggang,2002112735Williams, J.A.,2001251965972Yongwu, Z., L. Yanming and J. Jianzhong,20074395101Byung-Young, M., K. Gyung-Ju and K. Beom-Soo,200418125135Guozhi, Z., Z. Zhijing and J. Xin,200828764767Xi, J., G. Nie, X. Mei and X. Wu,2000344649Chen, L. and M. Deng,20113111Xianyue, G., C. Shan, R. Chuanbo and L. Lijun,201245866Zhichao, F., Y. Xiaoxiang and J. Jialing,200224298301Zongbao, L., S. Minglan and H. Yiran,2012498106ANSYS,2000